249 
Affinities of British Tuber aceae. 
Exsicc. Speg., Dec. Myc. 4. 
Described from a specimen from Vittadini in Herb. Kew., rare in this country. 
Smell weak, somewhat resembling radishes. 
Elaphomyces variegatus, Vitt., Mon. Tub., p. 68, tab. 4, fig. 4 (1831); 
Cooke, Brit. Fung., p. 749 (1871) ; Sacc., Syll.,viii, p.867 (1889) ; El. muricatus, Berk., 
Engl. Flora, v, p. 307 (1836). 
Ascophore subglobose, thick, hard, golden- or ochraceous-yellow or brownish, 
densely covered with pointed pyramidal warts, flesh whitish, mottled or streaked with 
reddish-brown, finally becoming altogether brown, mycelium yellow, scanty. Aset 
subglobose, 1-4-spored. Spores globose, blackish-brown, sometimes with a violet 
tinge, opaque, rather coarsely corrugated, 16-21 /u, when free mixed with a copious 
cobweb-like mass of capillitium threads. 
Hab. Under trees, mostly in upland woods. 
Distr. Britain ; France ; Italy ; Germany ; Belgium ; Sweden and Finland ; 
United States. 
Exsicc . Vize, Fung. Brit., 147; Cooke, Fung. Brit., 418; Berk., Brit. Fung. 
306; Sacc., Myc. Ven., 1390; Roum., Fung. Gall., 2170 and 2386; Thiim., Myc. 
Univ., 524. 
Specimen from Vittadini in Herb. Kew., examined. Distinguished from its 
nearest ally, E. granulatus, Fr., by the pointed pyramidal, usual four-sided warts on 
the ascophore, and by the marbled or variegated flesh, hence the specific name. Smell 
variable, sometimes quite weak at maturity, at others suggesting that of Ruta grave- 
olens or burnt hoof. Claviceps ophioglossoides , Fr., is often parasitic on this species. 
Elaphomyces granulatus, Fr., Syst. Myc. 3, p. 58 (1821) ; Cooke, Brit. Fung., 
p. 750 (1871); Sacc., Syll., viii, p. 868 (1889); El. leocarpus , Vitt., Mon. Tub., p. 72 
( l8 3i)- 
Ascophore globose or ellipsoid, firm, yellow then tawny or brownish, densely 
covered with minute rounded warts, flesh tinged red but not marbled when moist, pure 
white when dry, 2-6 cm. diam., mycelium yellow, scanty and soon disappearing. 
Aset subglobose, 1-8-spored. Spores globose, blackish-brown with a purple tinge in 
the mass, opaque, 20-30 ^ diam., mixed in the gleba with a dense mass of silky 
capillitium threads. 
Hab . In woods, especially in dry heathy ground. 
Distr. The whole of Europe ; N. America. 
Exsicc. Berk., Brit. Fung., 279; Moug. and Nest., Fung., 282; Thiim., Fung. 
Austr., 624; Klotzsch-Rab., Herb. Myc., 174; Karst., Fung. Fenn., 375; Fckl., 
Fung. Rhen., 1075 ; Syd., Myc. March., 341 ; Roumeg., Fung. Gall., 164; Desmaz. 
Crypt. Fr., ser. 1, 672. 
Our commonest species, general throughout England, and has been met with in 
Scotland, as far north as Glamis. When large the ascophore is sometimes more or 
less sulcate or nodulose. Smell generally weak, but sometimes pungent. 
Parasitic on the roots of trees, and is in turn the host of another fungus, Claviceps 
capitata , Fr. 
Elaphomyces leucosporus, Vitt., Mon. Lycop., p. 71, tab. 3, fig. 1 (1841); 
Tul., Hypog., p. 104 (1851) ; Sacc., Syll., viii, p. 865 (1889). 
